Liebert Power Supply Nfinity User Manual
POWER AVAILABILITY  
USER MANUAL  
Nfinity™ Power System  
208/240V  
60Hz  
4 to 16kVA  
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TABLE OF CONTENTS  
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
GLOSSARY OF SYMBOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
1.0  
INTRODUCTION  
1.1  
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
1.1.1 System Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Modes of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.3.1 Unit Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.3.2 User Interface Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.3.3 System Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.3.4 Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
1.3.5 Battery Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
1.2  
1.3  
2.0  
INSTALLATION  
2.1  
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.1.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.1.2 Required Setup Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
2.1.3 Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
2.2.1 Unloading the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
2.2.2 Stationary Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Cable Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
2.3.1 Wiring Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
2.3.2 Connecting to External Panel Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Input Cabling and Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Output Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
2.3.3 REPO Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
2.4.1 COM Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
2.4.2 Intellislot™ Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
2.2  
2.3  
2.4  
3.0  
OPERATING INSTRUCTIONS  
3.1  
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
3.1.1 Display Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Status LED Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Navigating the Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
3.4.1 Start-Up and Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
3.4.2 Shutting Down the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
3.4.3 Manual Transfer to Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
3.2  
3.3  
3.4  
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3.5  
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
3.5.1 UPS Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
3.5.2 UPS Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
3.5.3 Display Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
3.5.4 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
3.5.5 Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
3.5.6 Transfer to Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
3.5.7 Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
3.5.8 Service Tools for Liebert Global Services Engineers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
4.0  
4.1  
4.2  
4.3  
TROUBLESHOOTING  
Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Module LED Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34  
4.3.1 Removing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34  
4.3.2 Adding or Replacing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
4.3.3 Replacing the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
5.0  
MAINTENANCE  
5.1  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36  
5.1.1 Proper Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36  
5.1.2 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36  
5.1.3 Replacing Fan Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36  
6.0  
SPECIFICATIONS  
6.1  
Product Warranty Registration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
FIGURES  
Figure 1  
Figure 2  
Front and back views (12 bay model shown). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
REPO switch connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
TABLES  
Table 1  
Table 2  
Nfinity weight and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Guide to LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
ii  
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IMPORTANT SAFETY INSTRUCTIONS  
SAVE THESE INSTRUCTIONS  
This manual contains important instructions that should be closely followed during installation and  
maintenance of this UPS unit and during the installation and replacement of Power and Battery  
Modules.  
This product is designed for Commercial/Industrial use only. This product is not intended for use  
with life support and other U.S. FDA-designated “critical” devices. Maximum load must not exceed  
that shown on the UPS rating label.  
WARNING  
!
Lethal voltages may be present within this unit even when it is apparently not operating.  
Observe all cautions and warnings in this manual. Failure to do so MAY result in serious  
injury or death. Never work alone.  
Observe the following precautions when working with batteries:  
CAUTION  
!
DO NOT dispose of Battery Modules in a fire because the modules may explode.  
DO NOT open or mutilate batteries; released electrolyte is harmful to skin and eyes and may  
be toxic.  
A battery can present a risk of electrical shock and high short-circuit current. The following  
precautions should be observed when working on batteries:  
• Remove watches, rings and other metal objects.  
• Use tools with insulated handles.  
Lead-acid batteries contain hazardous toxic materials. Handle, transport and recycle in  
accordance with local regulations.  
This UPS is designed for use on a properly grounded (earthed), 208/240 VAC, 60 Hz supply and is to  
be installed by qualified personnel.  
Electromagnetic Compatibility—The Nfinity™ UPS complies with the limits for a Class A digital  
device, pursuant to Part 15 of FCC rules. These limits provide reasonable protection against harmful  
interference in a commercial environment. This device generates, uses and radiates radio frequency  
energy and, if not installed and used in accordance with the instruction manual, may cause harmful  
interference to radio communications. Operating this device in a residential area is likely to cause  
harmful interference which users must correct at their own expense.  
Operate the UPS in an indoor environment only in an ambient temperature range of 32°F to +104°F  
(0°C to +40°C). Install it in a clean environment, free from conductive contaminates, moisture, flam-  
mable liquids, gases and corrosive substances.  
Turn the UPS off and isolate the UPS before cleaning. Use only a soft cloth, never liquid or aerosol  
cleaners. Keep the front and rear vents free of dust accumulation that could restrict airflow.  
Never block or insert any object into the ventilation holes or other openings.  
This UPS contains user replaceable modules. No attempts should be made to access the interior of  
any module. See 4.3 - Module Replacement.  
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GLOSSARY OF SYMBOLS  
Risk of electrical shock  
Indicates caution followed by important instructions  
AC input  
AC output  
Requests the user to consult the manual  
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Indicates the unit contains a valve-regulated lead acid  
battery  
Recycle  
DC voltage  
Equipment grounding conductor  
Bonded to ground  
AC voltage  
OFF  
ON  
Standby  
No telecommunication connection  
Locked position  
Unlocked position  
Contact closure signals  
Serial communications  
2
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Introduction  
1.0 INTRODUCTION  
1.1 General Description  
Congratulations on your purchase of Liebert’s Nfinity™ Uninterruptible Power System. As with  
every other Liebert product, we stand behind our quality. If you have any questions concerning this  
UPS, please feel free to contact your local dealer or Liebert representative or call the appropriate  
Technical Support number listed on the back of this manual.  
To ensure proper installation and operation of this unit, please read this manual thoroughly.  
For details on product warranty and registration, see 6.1 - Product Warranty Registration.  
1.1.1 System Description  
The Liebert Nfinity Power System is a modular UPS available in 8 & 12 bay frames. It is intended for  
use with workstations, servers, network, telecom and other sensitive electronic equipment. It pro-  
vides continuous, high-quality AC power to your equipment, protecting it from any power disturbance  
due to blackouts, brownouts, surges or noise interference.  
The Nfinity modular UPS was designed to provide maximum system availability to business-critical  
equipment. Nfinity is also an easily adaptable UPS system. By simply installing additional Power or  
Battery Modules, you can expand your current system capacity or extend your backup runtime.  
Nfinity has a comprehensive user interface that enables configuration according to the user’s prefer-  
ence. It also informs the user of details on the status of the UPS and keeps a log of events.  
Features  
• Up to 16 kVA of modular backup power  
• Continuous power conditioning  
• A user-friendly interface for custom configuration  
• Continuous system monitoring  
• Warning alarms and event logs  
• Internal automatic & manual bypass  
Standard Components  
• Power Modules - for power conditioning  
• Battery Modules - for backup power  
• System Control Modules - for system monitoring and communications  
• LCD Display - for comprehensive user indications and programmable controls  
• Output Transformer - for isolation  
• REPO Switch Connection  
Communications  
• Dry contacts  
• RS-232  
• Optional communications via Intellislot™ communication ports  
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Introduction  
Figure 1 Front and back views (12 bay model shown)  
Control  
Switch (SW2) Connection  
REPO  
Intellislot™  
Communications Ports  
User Interface  
!
ESC  
DB-9  
Communication  
Ports  
Power  
Module  
Bays  
Battery  
Module  
Bays  
Output Power  
Terminal  
208/240 Jumper  
Input Power  
Terminal  
Input Earth  
Terminal  
Manual  
Bypass  
Switch  
(SW1)  
Input Circuit  
Breaker (CB1)  
Intake  
Cooling Fans  
External Battery  
Connection  
FRONT VIEW  
with bezels  
removed  
BACK VIEW  
with access  
plates removed  
Refer to the table below for size and fully populated weight considerations.  
Table 1 Nfinity weight and dimensions  
Max Weight - lb (kg)  
Model  
8 bay  
W x D x H - in. (mm)  
855 (388)  
20 x 28 x 40 (508 x 711 x 1016)  
20 x 28 x 53 (508 x 711 x 1346)  
12 bay  
1176 (534)  
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Introduction  
1.2  
Modes of Operation  
INPUT  
OUTPUT  
MANUAL  
BYPASS  
OUTPUT &  
EMI  
FILTER  
POWER  
MODULE(S)  
OUTPUT  
TRANSFORMER  
BYPASS  
CONTACTOR  
BATTERY  
MODULE(S)  
SYSTEM  
USER  
INTERFACE  
CONTROL  
INTERFACE  
CONTROL  
MODULE(S)  
POWER  
CONTROL  
COMMUNICATIONS  
Normal Mode  
The Power Module rectifiers derive power from a utility AC source and supply regulated DC power to  
the inverter. The module’s inverter regenerates precise AC power to supply the connected equipment.  
The battery charger is in the Power Module and maintains a float-charge on the batteries.  
Backup Mode  
When AC utility fails, the connected equipment is supplied power by the inverter, which obtains  
energy from the Battery Modules. The output power equipment will not be interrupted during the  
failure or restoration of the AC utility source.  
Auto Restart Mode  
After a power outage and complete battery discharge, and once AC utility is restored, the UPS will  
automatically restart and resume supplying power to connected equipment. This feature is enabled at  
the factory, but can be disabled by the user. The user can also program two auto restart delay settings:  
1. Battery capacity level (%)  
2. Countdown timer  
Bypass Mode  
The bypass provides an alternate path for power to the connected equipment and operates in the fol-  
lowing manner:  
• Automatic  
In the event of an internal fault or should the inverter overload capacity be exceeded, the UPS  
performs an automatic transfer of the connected equipment from the inverter to the bypass  
source.  
• Manual  
Should the UPS need to be taken out of service for limited maintenance or repair, manual activa-  
tion of the bypass will cause an immediate transfer of the equipment from the inverter to the  
bypass source.  
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Introduction  
1.3  
Major Components  
Nfinity’s frame  
with bezels removed  
The following is a general description of each compo-  
nent and its functions. Please review this section  
carefully, as it will give you a better understanding as  
to how the Nfinity operates.  
1.3.1 Unit Frame  
The front of the Nfinity consists of a series of plastic  
bezels. By grasping these bezels from the left and  
right sides and pulling straight out, you can remove  
the bezel to reveal the Battery / Power Module bays.  
The bottom bezel covers the internal cooling fans and  
the manual bypass switch.  
The User Interface Module is located above the  
Power / Battery Module bays for easy access. By mov-  
ing the User Interface and setting it on top of the  
frame, you will see the system control module bays.  
NOTE  
In the figure at right, the Power Module and  
Battery Module are extended for illustration  
purposes only. Extending more than one  
module at a time could cause the unit to be  
top-heavy and/or tip.  
1.3.2 User Interface Module  
User Interface Module  
The User Interface Module is the primary source of  
communication between the UPS and the user. From  
the interface, the user can:  
• View the status of the UPS  
• Custom configure the system  
• Review the event log to assist with  
troubleshooting  
• Enable/disable the output power  
• Silence the audible alarm  
• Manually transfer the unit to bypass  
For a more detailed explanation on how to operate the  
User Interface Module, see 3.1 - Controls and Indi-  
cators.  
1.3.3 System Control Module  
System Control Module  
The System Control Module is the communications  
backbone of the UPS. It gathers input from all mod-  
ules and processes the data to control the operation of  
the system — including monitoring the condition of  
each module. An optional redundant System Control  
Module can be installed to provide full system func-  
tionality (operation and communication).  
Fasteners  
Under normal operation, the Status LED (green) will  
blink and the Fault LED (yellow) will be off. For any  
condition other than this, check 4.0 - Troubleshoot-  
ing.  
Fault LED  
Status LED  
Lever  
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Introduction  
1.3.4 Power Module  
Each power module is an independent 4 kVA, 2.8kW unit, consisting of a power factor corrected recti-  
fier, battery charger and inverter, with associated monitoring and control circuitry. The modules are  
paralleled to provide greater capacity and/or redundancy. Modules may be added or replaced on-line  
with no interruption or danger to the connected equipment.  
1.3.5 Battery Module  
Each battery module contains 10 individual 12-volt, 9 amp hour, valve-regulated (VRLA) battery  
blocks with associated monitoring and controls to isolate the Battery Module in the event of a battery  
failure. The modules are paralleled to provide greater capacity, backup time and/or redundancy. Mod-  
ules may be added or replaced on-line with no interruption or danger to the connected equipment,  
provided that the UPS is not operating on battery.  
Power Module  
Battery Module  
Shipping screws  
Fastener  
Green Status LED  
Yellow Fault LED  
Cooling Fan  
Lever  
FRONT  
FRONT  
Under normal operation, the Green Status LED will blink continuously and the Yellow Fault LED  
will be off. For any condition other than this, check 4.0 - Troubleshooting.  
NOTE  
Nfinity is shipped with each battery module secured to the frame by two shipping screws. These  
screws should be removed prior to start-up.  
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Installation  
2.0 INSTALLATION  
2.1 Inspection  
Upon receiving the UPS, examine the packaging for any signs of mishandling or damage. If any dam-  
age is noted, call your local dealer or Liebert representative and/or notify your carrier.  
2.1.1 Environment  
NOTE  
Operating in temperatures above 77°F (25°C) will reduce battery life. The UPS environment  
must be free of conductive contaminants and excessive moisture (water and condensation),  
flammable vapors, chemical fumes, corrosive gases and liquids.  
2.1.2 Required Setup Equipment  
The tools below are required to properly set up your UPS:  
• Pallet jack  
• 1/2" (13mm) ratchet or wrench  
• Torque wrench (in-lb)  
• Flathead screwdriver  
• #2 Phillips screwdriver  
2.1.3 Site Preparation  
When deciding where to locate your UPS,  
consider the weight and size of the unit. Make  
sure that the structural integrity of the floor  
can withstand the weight of a fully loaded unit.  
12"  
(305mm)  
Check to make sure that your UPS will be  
located in a well-ventilated area with at least  
12 inches (305mm) behind it. The UPS is  
air-cooled utilizing internal fans. Air is drawn  
into the front of the UPS and is exhausted  
through ventilation grilles in the back. It should  
also have at least 36 inches (915mm) in front in  
order to change modules when necessary.  
36"  
(915 mm)  
The unit frame is bolted to the shipping pallet to ensure safety. It is recommended that a pallet jack  
be used to transport the unit to its operating location (prior to unbolting the unit).  
8
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Installation  
2.2  
Unloading  
2.2.1 Unloading the UPS  
2. Remove the metal ramp from the bottom of  
the UPS.  
CAUTION  
!
This UPS is very heavy (see weight in  
Table 1). At least two people should  
assist in unloading it from the pallet.  
Pull ramp out from  
under front of unit,  
then turn ramp over  
3. Fit the ramp flange in the slot in the rear  
of the pallet (back of unit) as shown below.  
1. Use a ratchet or wrench, 1/2" (13mm), to  
remove the four mounting bolts from the  
front and rear pallet brackets. Remove the  
mounting brackets from the pallet and  
UPS. Keep the brackets for future  
Fit ramp in  
rear of pallet  
transportation of the UPS or for additional  
stability of the UPS once in place.  
4. Using two people, slowly move the UPS  
down the ramp until the UPS is on a level  
surface.  
9
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Installation  
5. Once the UPS is in the desired location, adjust the leveling feet to secure its position.  
1/2" (13mm)  
2.2.2 Stationary Mounting  
Additional stability can be added by bolting the mounting brackets (used in shipping) to the floor, as  
shown below left.  
Shipping Brackets Used  
for Stationary Mounting  
Optional Stationary  
Mounting Dimensions  
4.75"  
4.75"  
(120mm) (120mm)  
28"  
(711mm)  
5/16" (7.94mm)  
diameter - in six  
places  
For greater stability, use a higher-grade bolt. Refer to the dimensions above right when drilling holes  
for stationary mounting.  
10  
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Installation  
2.3  
Cable Installation  
2.3.1 Wiring Preparation  
Customer-Provided Overcurrent Protection  
A branch rated overcurrent protection device (cir-  
cuit breaker or fused disconnect switch) must be  
installed for the AC input.  
WARNING  
!
Please read this section thoroughly  
before attempting to install wiring to  
this unit.  
If the start-up is on bypass, the UPS has a six-  
cycle inrush current that is up to 20 times the  
rated output current. This must be taken into  
account when selecting the overload protection  
device at the AC input supply distribution point.  
To avoid random tripping on start-up, it is recom-  
mended that the AC input supply be protected  
with a circuit breaker capable of withstanding  
this initial inrush.  
This UPS should be installed by a  
qualified / certified electrician.  
Removing the Cover Plates  
On the back  
of the UPS,  
cover plates  
are over the  
input and  
output  
Remove Cover Plates  
This UPS is fitted with EMI suppression filters.  
Earth leakage current is less than 40mA. Tran-  
sient and steady state earth leakage currents may  
occur when starting the equipment. This should  
be taken into account when selecting ground cur-  
rent detection devices, as the earth leakage cur-  
rents of both the UPS and load will be carried.  
terminals, as  
shown at  
right. Keep  
screws and  
plates to one  
side.  
Input and output cables must be run in separate  
conduits.  
Configuring the Bypass Voltage (TB2)  
The UPS voltage is factory-set to 208 V.  
Should the user have a utility supply of 240 V,  
the bypass voltage jumper will have to be  
changed to ensure correct output voltage.  
After selection, retorque jumper screws to  
28 in-lb.  
Bypass Voltage Jumper  
OR  
208 V  
(default)  
240 V  
11  
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Installation  
Input Wiring (TB1)  
To connect the input wiring, follow these steps:  
1. Locate the input wiring access, remove the knockout and  
pull the three input wires through it, allowing some slack  
for installation.  
2. Secure the conduit to the rear panel of the UPS.  
3. Input Power cables connect to screw terminals on the  
Input Terminal Block located to the right of the Bypass  
Voltage Terminal. Connect the wires to the block  
connections as shown below. Using a torque wrench, turn  
the screws clockwise until tightened to the proper torque  
value (28 in-lb). Insert the ground wire through the  
grounding lug and tighten it to the proper torque value  
(120 in-lb).  
TB1  
L1  
Grounding Conductor Installation  
1
2
An insulated grounding conductor must be identical or larger  
in size, insulation material, and thickness as the grounded  
and ungrounded branch circuit supply conductors. This cable  
must be green with or without one or more yellow stripes and  
is to be installed as part of the branch circuit that supplies  
the unit or system.  
L2  
The grounding conductor is to be grounded to earth at the  
service equipment or, if supplied by a separately derived sys-  
tem, at the supply transformer or generator set.  
Output Wiring (TB3)  
Output wiring may be configured one of two different  
ways (240/120 or 208/120). Refer to the chart below  
and the diagram at right when configuring the out-  
put wiring.  
Voltage  
120  
208  
240  
Between terminals  
1 & 4  
3 & 4  
2 & 3  
1 & 3  
Use only the connections listed above. Other connections will  
produce nonstandard voltages.  
NOTE  
The Nfinity UPS contains an isolation  
transformer that generates a neutral  
conductor for the connected equipment.  
The UPS is a separately derived source  
and contains a neutral to ground bonding  
jumper. A grounding electrode conductor  
(GEC) must be installed in accordance  
with national and local wiring codes and  
regulations.  
Note the Neutral / Earth  
jumper on the terminal  
above  
12  
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Installation  
2.3.2 Connecting to External Panel Boards  
The following instructions are also shipped attached to the rear of the unit.  
INPUT CABLING AND PROTECTION  
Table Below Applies to 4-16kVA Scalable Systems:  
Stand-alone UPS or  
UPS equipped with a Maintenance Bypass Cabinet (Without Transformer)  
Input Voltage – 208VAC  
Input Voltage – 240VAC  
Recommended  
Input Protection  
Circuit Breaker  
Recommended  
Input Protection  
Circuit Breaker  
Max. Current  
in UPS mode  
Max. Current  
in UPS mode  
Max. System  
Load Rating  
4kVA  
8kVA  
18 amps  
36 amps  
53 amps  
70 amps  
50 amps  
50 amps  
75 amps  
100 amps  
15 amps  
31 amps  
46 amps  
50 amps  
50 amps  
75 amps  
100 amps  
12kVA  
16kVA  
62 amps  
2
Terminal  
Block  
Maximum: 35mm (2AWG)  
2
Minimum: 16mm (6AWG)  
Details  
Torque Rating: 2.5-3.0Nm (22-26in/lbs)  
UPS With Maintenance Bypass Cabinet (With Transformer)  
Single Input Feed: All UPS ratings must use 100A input circuit breaker protection.  
Dual Input Feed: See table below.  
UPS Feed  
Bypass Feed  
208V or 240V  
Input Voltage – 208VAC  
Recommended  
Input Voltage – 240VAC  
Recommended  
Input Protection  
Circuit Breaker  
Max. Current  
Max. Current  
in UPS mode Protection Circuit Breaker  
Recommended Input  
Max. System  
Load Rating  
Input Protection  
Circuit Breaker  
in UPS mode  
4kVA  
8kVA  
18 amps  
36 amps  
53 amps  
70 amps  
50 amps  
50 amps  
75 amps  
100 amps  
15 amps  
31 amps  
46 amps  
62 amps  
50 amps  
50 amps  
75 amps  
100 amps  
100 amps  
100 amps  
12kVA  
16kVA  
100 amps  
100 amps  
2
Terminal  
Block  
Maximum: 35mm (2AWG)  
2
Minimum: 16mm (6AWG)  
Details  
Torque Rating: 2.5-3.0Nm (22-26in/lbs)  
Bypass Voltage Jumper Position (TB2)  
208 VAC  
(Factory Default)  
240 VAC  
(Field Change)  
Bypass Voltage Selection  
Jumper/link  
on upper two  
screws  
Jumper/link  
on lower two  
screws  
13  
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Installation  
OUTPUT CABLING  
UPS Output Terminal Block (TB3)  
Connection to External Panel Boards  
208 VAC  
If connected equipment operates at 208VAC only, use a single-phase panel board connected to the UPS as follows.  
Setup 1 - 208 VAC  
Max output current = 77A  
Panel Board Input  
UPS Output TB3  
1
1
2
3
4
5
2
L
L
L
208  
208  
3
L
4
5
GEC  
Grounding Electrode Conductor  
(Field connection must be made)  
GEC  
Grounding Electrode Conductor  
(Field connection must be made)  
G
Connected Equipment  
Ground  
208 VAC and 120 VAC  
If connected equipment is a combination of 208 VAC and 120 VAC, use a three-phase panel board connected to  
the UPS as follows.  
Panel Board Input  
UPS Output TB3  
Setup 2 - 120 VAC  
Max output current = 67A  
each 120 VAC circuit  
1
L3  
2
1
2
3
L2  
L
L
120  
208  
3
L1  
120  
120  
120  
Note: L2 to N  
is 88 VAC  
4
N
5
4
5
GEC  
N
Grounding Electrode Conductor  
(Field connection must be made)  
208 VAC also  
available  
as shown  
connected  
in Setup 1  
GEC  
Grounding Electrode Conductor  
(Field connection must be made)  
G
CAUTION: It is important for the installing  
electrician to clearly identify the connections for  
future reference. Refer to NEC 215-8 and 210-4(d).  
Connected Equipment  
Ground  
240VAC and/or 120VAC  
If connected equipment operates at 240VAC only or 120VAC only or is a combination of both, use a single-phase  
panel board connected to the UPS as follows.  
Setup 3 - 240 VAC  
Max output current = 67A  
Panel Board Input  
UPS Output TB3  
1
1
L
L
L
240  
2
2
3
4
240  
120  
3
L
120 VAC also  
available as shown  
connected in Setup 2  
120  
4
N
5
5
GEC  
GEC  
Grounding Electrode Conductor  
(Field connection must be made)  
Grounding Electrode Conductor  
(Field connection must be made)  
Connected Equipment  
Ground  
G
14  
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Installation  
2.3.3 REPO Connection  
The Nfinity is equipped with a Remote Emergency Power Off (REPO) connection.  
NOTE  
A jumper is factory installed between pins 1 & 2 to disable the Control Switch (SW2).  
This will prevent the unit from being started during installation. This jumper must  
be removed in order to start the unit.  
Figure 2 REPO switch connections  
Hanger for cable-tie  
to strain relief REPO  
wiring  
REPO switch  
on rear of unit  
REPO jumper  
connected  
as shipped  
REPO connections  
for normally open  
switch system  
REPO connections  
for normally closed  
switch system (fail-safe)  
1
2
3
4
1
2
3
4
1
2
3
4
NOTE  
Key to REPO switch connections  
1. 24 V DC, 50mA  
2. Sense  
3. Sense  
4. Ground  
Remove jumper before wiring.  
If the installation does not  
require connection to a REPO  
system, the jumper must be  
removed.  
CAUTION  
!
To maintain safety, Signal Edge Low Voltage (SELV) barriers, and electromagnetic  
compatibility, signal cables should be segregated and run separately from power cables.  
15  
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Installation  
2.4  
Communications  
2.4.1 COM Ports  
Pin Assignment  
Nfinity is able to communicate through multiple communication  
ports simultaneously. Use only Liebert-provided communication  
cards. Connect only Signal Edge Low Voltage (SELV)/Class 2 cir-  
cuits when connecting to any communication port.  
5
4
3
2
1
There are two DB-9 COM ports available on the rear of the Nfinity.  
9
8
7
6
COM1 - Relay Contacts  
Relay contacts are available through a DB-9F communications connector. Contact closure provides  
the following:  
Pin  
1
Assignment  
Low Battery (normally open)  
4
UPS shutdown in battery mode  
(5-12 V DC for 1.5 sec)  
5
7
8
9
Common  
Low Battery (common)  
On Battery (common)  
On Battery (normally open)  
These contacts are rated 48 VDC, 1 amp maximum and are compatible with Liebert MultiLink™  
software.  
COM2 - Serial  
Nfinity is able to communicate via Liebert proprietary protocol. This communication port can be used  
for serial communication with Liebert MultiLink software. For more detailed information, please see  
the MultiLink software documentation on the CD shipped with the Nfinity. The pin-out configuration  
of the DB-9 connector is:  
Pin  
2
Assignment  
Transmit Data  
3
Receive Data  
Common  
5
2.4.2 Intellislot™ Ports  
The following communication cards may be used with Nfinity:  
• Intellislot OpenComms Web Card—allows  
the Nfinity to communicate intelligently with  
your Ethernet network. The OpenComms Web  
Card must be installed in port 1.  
Port 1 Port 2  
Port 3 Port 4  
• Intellislot MultiPort4 cards—allows up to  
four client computer systems to monitor the sta-  
tus of Nfinity simultaneously.  
• Intellislot Relay Contacts cards—provides  
contact closures for remote monitoring of alarm  
COM 1  
COM 2  
conditions; On Battery, On Bypass, Low Battery,  
Summary Alarm, UPS Fault and On UPS  
signals.  
16  
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Operating Instructions  
3.0 OPERATING INSTRUCTIONS  
3.1 Controls and Indicators  
3.1.1 Display Controls  
The User Interface Module informs you of the status of the UPS and lets you configure the UPS to  
your own needs or preferences.  
The module consists of a series of Status LEDs, an LCD display window (four lines of 20 characters  
each), and buttons for navigation, as displayed below.  
Status LEDs  
Fault/Warning LED  
Standby Button  
ESC  
LCD Display  
Window  
Alarm  
Silence  
Button  
Navigation Buttons  
Buttons  
Fault/Warning and Status LEDs  
Refer to the legend below to properly navigate the  
Nfinity User Interface.  
Refer to the legend below to indicate occurrence  
when an LED is lit.  
Fault/Warning  
Up  
Solid - A UPS fault condition has occurred.  
Flashing - A Warning has occurred. Consult event log.  
- Navigates cursor on display menus  
Down  
AC Input - AC utility is available.  
Escape - Returns to previous display screen  
ESC  
On Bypass - The Bypass is supplying the power.  
Inverter On - The inverter is supplying the power.  
On Battery - Battery is supplying power to the inverter.  
AC Output - Power is available to supply the load.  
Enter  
- Selects displayed information  
Standby - Enables / disables output power  
Alarm  
Silence  
- Mutes the audible alarm  
17  
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Operating Instructions  
3.2  
Status LED Modes  
3.3  
Navigating the Menu  
To review or change any settings on the UPS,  
use the buttons on the User Interface shown  
at left. Because some menus contain more  
than four rows of information, you may see an  
arrow on the display pointing up or down (as  
shown below)—indicating to scroll using the  
UPS is Off or Initializing  
or  
buttons.  
If you are scrolling through any of the Main  
Menus, items will scroll one line at a time  
with the menu heading on the top line:  
UPS is On, Utility is Good  
and Output is Off  
UPS Status  
Present Load  
Redundant Status  
Battery Status  
UPS is On, Utility is Good  
and Output is On  
(Normal Operation)  
Pressing  
reveals:  
UPS Status  
Redundant Status  
Battery Status  
Volts/Amps/kVA  
UPS is On, Utility is Bad  
and Output is On  
(On Battery Operation)  
Note the arrows on the screen indicate that  
the user can scroll up or down to reveal more  
information.  
UPS is On, Utility is Bad  
and Output is Off  
UPS is in Bypass Operation  
(Manual or Automatic)  
UPS is in Manual Bypass  
Operation with Utility Out of  
Bypass Operation Range  
Shutdown Due to  
End of Discharge  
LED Off  
LED On  
LED Flashing  
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Operating Instructions  
3.4.3 Manual Transfer to Bypass  
3.4  
Operating Procedures  
To manually transfer the UPS to bypass,  
move the manual bypass switch to the bypass  
position. The manual bypass switch is behind  
the front bottom bezel. To transfer the UPS  
from bypass to normal mode, follow the on-  
screen instructions.  
3.4.1 Start-Up and Initialization  
Follow these steps to start up the UPS.  
1. Ensure the manual bypass switch is in  
UPS position. Close Input Circuit Breaker  
(CB1) and close the Control Enable  
Switch (SW2). You should see the  
Main Menu  
> Transfer to Bypass  
following on the LCD display window:  
UPS Initializing  
Please wait...  
Transfer to Bypass  
Press for bypass  
Press ESC to cancel  
*Press to Enable  
UPS Output.  
2. Press  
or  
button.  
ESC  
Assert manual bypass  
On Mains/Utility  
Output % = xx  
Battery Minutes yyy  
Press for menu  
Once  
is pressed, the bypass alarm will  
annunciate and cannot be canceled until the  
manual bypass switch is operated.  
3. Press  
to access the Main Menu.  
3.4.2 Shutting Down the UPS  
Use the following procedure to power down  
the UPS.  
On Bypass  
Manual  
Bypass  
Switch  
1. Press  
connected equipment.  
2. Verify request to disable the output by  
pressing  
to disable power from the  
On UPS  
.
3. Turn off the Enable Switch (SW2). Open  
the Input Circuit Breaker (CB1).  
UPS on manual bypass  
NOTE  
The load is not protected from utility  
interruptions when the UPS is in  
bypass mode.  
To transfer the UPS from bypass to normal  
mode, simply operate the manual bypass  
switch back to the UPS position.  
On return from bypass, the following screen  
will be displayed.  
No active alarms  
See Event Log  
19  
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Operating Instructions  
3.5  
Main Menu  
After initialization, the  
button will take you to the Main Menu. From here you may check on the  
status of the UPS, review the event log and active alarms, configure your UPS and even receive  
instructions on replacing modules. The Main Menu is divided into eight sub-menus as shown below:  
Main Menu  
> UPS Status  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
UPS Status  
Event Log  
Module Replacement  
UPS Status  
Event: xxx/xxx xx  
event message  
Module Replacement  
Ctrl w/ Redundant  
Ctrl w/o Redundant  
Pwr w/ Redundant  
Pwr w/o Redundant  
Battery Module  
Present Load  
Redundant Status  
Battery Status  
Volts/Amps/kVA  
UPS Frequency  
event message  
DD/MMM/YYYY HH:MM:SS  
Bypass Information  
UPS Information  
Module Information  
UPS Configuration  
Active Alarms  
Service Tools  
UPS Configuration  
Review Settings  
Change Settings  
Service Mode  
Active Alarms Message  
Service Tools  
UPS Test  
Clear Failures  
BM Cell Replacement  
Reset Battery Stats  
Reset Bypass Stats  
Transfer to Bypass  
Press for bypass  
Press ESC to cancel  
Display Date/Time  
Date/Time  
xx/xx/xxxx xx:xx:xx  
mm/dd/yyyy hh:mm:ss  
Use the  
and  
buttons to select the desired menu item and press  
to access the appropriate  
submenu.  
20  
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Operating Instructions  
3.5.1 UPS Status Screen  
From the Main Menu the user may select UPS Status and press  
. Once at the UPS Status Screen,  
the user may access any information on the present condition of the UPS. Note the chart below when  
reviewing the UPS.  
Main Menu  
> UPS Status  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
UPS Status  
UPS Status  
Present Load  
Redundant Status  
Battery Status  
Volts/Amps/kVA  
UPS Frequency  
Bypass Information  
UPS Information  
Module Information  
UPS Status menu options  
Present Load  
Volts/Amps/kVA  
Module Information  
On Mains/Utility  
Output: kVA xx.x  
Output: kW xx.x  
Output: pf xx.x  
Input  
Output  
Main Control  
S/N: xxxxxxxxxxxxxxx  
FW ver: xxxx  
xxx VAC  
xxx A  
xxx VAC  
xxx A  
xx.x kVA  
xx.x kVA  
Redundant Control  
S/N: xxxxxxxxxxxxxxx  
FW ver: xxxx  
Redundant Status  
Redundant Status  
PMs Installed xx  
PM:N+1 redundant/non-redundant  
SC:Redundant/(non-redundant)  
UPS Frequency  
UPS Frequency  
Input Hz: xx.x  
Output Hz: xx.x  
User Interface  
S/N: xxxxxxxxxxxxxxx  
FW ver: xxxx  
Bypass Information  
Bypass Reasons  
Manual-User x  
Overload  
Other  
Battery Status  
Battery Status  
Voltage (VDC) xxx  
Capacity % xxx  
Power Module  
S/N: xxxxxxxxxxxxxxx  
FW ver: xxxx  
x
x
Status: charging  
BMs Installed xx  
Ext batt present: No  
Discharge count: xxxx  
Batt Usage Hr: xxxx.x  
Battery Module  
S/N: xxxxxxxxxxxxxxx  
FW ver: xxxx  
UPS Information  
UPS Information  
UPS ID: xxxxxxxxxxxx  
xxxxxxxxxxxxxxxxxxx  
Bays=x,XFMR=x  
Defaults = xxxV/xxHz  
Limit/Cnfg=xxxkVA/1x1  
Model ID=x  
21  
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Operating Instructions  
3.5.2 UPS Configuration Screen  
Review Settings  
Follow this procedure to review your UPS configuration settings. Follow the menus below by pressing  
and to review the settings.  
Main Menu  
UPS Status  
> UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
UPS Configuration  
UPS Configuration  
> Review Settings  
Change Settings  
Service Mode  
Review Settings  
Voltage  
Frequency  
Battery  
Alarm  
Service Contact  
Auto Restart  
UPS Shutdown Delay  
Remote Shutdown  
External Battery  
Bypass Alarm Mode  
Intelli-Battery Ca.  
Air Filter Reminder  
Guarantee Shutdown  
Review Settings menu options  
Service Contact  
Voltage  
External Battery  
Voltage Settings  
Input 208/120  
Output 208  
Service Contact  
Liebert Corp.  
External batt config  
Amp.Hr  
0000  
Charge (A) 00.0  
www.liebert.com  
Frequency  
Bypass Alarm Mode  
Auto Restart  
Auto Restart  
Frequency Settings  
Frequency Hz: 60  
Sync Range Hz: +/- 5.0  
Slew Range Hz/S: 3.0  
Bypass Alarm Mode  
Mode:  
Enable  
Mode:  
Batt %  
Delay  
Disable  
0%  
10  
Intelli-Battery Ca.  
Intelli-Batteries  
0
Battery  
UPS Shutdown Delay  
UPS Shutdown Delay  
120 seconds  
Battery Settings  
Test intrvl weeks: 2  
on Wed 06:00  
Air Filter Reminder  
Air Filter Reminder  
Low Batt Warn:2 min  
Mode:  
26 weeks  
Remote Shutdown  
Remote comm shutdown  
Mode: Enable  
Alarm  
Guarantee Shutdown  
Guarantee Shutdown  
Mode: Enable/Disable  
Alarm Settings  
Redundant Alarm:  
Enabled/Disabled  
Max Load: Enabled/Disabled  
22  
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Operating Instructions  
Change Configuration Settings - Change Settings Menu  
Starting from the Main Menu, locate and press UPS Configuration. From the UPS Configuration  
screen, select the Change Settings option. You may configure Nfinity from a large variety of selec-  
tions. Items indicated by an asterisk (*) are the selected settings.  
Main Menu  
UPS Status  
> UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
UPS Configuration  
UPS Configuration  
Review Settings  
> Change Settings  
Service Mode  
Change Settings  
Input Voltage  
Display Voltage  
Frequency Sync Range  
Frequency Slew Rate  
Set Password  
Auto Battery Test  
Low Battery Warning  
Auto Restart  
User Settings  
Set Date/Time  
Max Load Alarm Set  
UPS Shutdown Delay  
Redund Alarm Set  
Service Contact  
Remote Shutdown  
External Battery  
Bypass Alarm Mode  
Intelli-Batt Ca.  
Air Filter Reminder  
Guarantee Shutdown  
Line Compensation  
Factory Defaults  
Input Voltage: Select the required input voltage set- Frequency Slew Rate: Sets the rate of change of  
ting. This voltage must match the bypass voltage  
jumper setting.  
frequency through the sync range window.  
Frequency Slew Rate  
0.5 Hz  
Input Voltage  
* 208/120  
240/120  
1.0 Hz  
2.0 Hz  
3.0 Hz  
4.0 Hz  
Display Voltage: Displays the actual voltage the  
unit is configured for.  
* 5.0 Hz  
Set Password: Set a Password to prevent unautho-  
rized users from changing the configuration of the  
Nfinity. It can be up to seven characters in length.  
Once set, the password will be required to change the  
configuration.  
Display Voltage  
208  
* 240  
Frequency Sync Range: Sets the window to which  
the system synchronizes to the input supply.  
Set Password  
xxxxxxx  
Frequency Sync Range  
0.5 Hz  
1.0 Hz  
2.0 Hz  
NOTE  
3.0 Hz  
If the password is lost, call Liebert Technical  
Support.  
4.0 Hz  
* 5.0 Hz  
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Operating Instructions  
Auto Battery Test: Configure when and how often  
Auto Restart: Automatically restarts once both  
the Nfinity’s automatic battery test will run. This test delay parameters (battery capacity percentage and  
is designed to ensure battery system integrity and  
provide early warning of problems.  
countdown timer) are met.  
Auto Restart  
Mode  
Auto Battery Test  
Interval  
Auto restart batt %  
Auto restart delay  
Start Day  
Start Time  
Auto Restart Mode  
Interval  
Batt Test Interval  
1 week  
Auto Restart Mode  
* Enable  
Disable  
* 2 weeks  
3 weeks  
4 weeks  
Auto Restart Batt %  
Auto Restart Batt %  
6 weeks  
Disabled  
* 0%  
10%  
25%  
40%  
60%  
80%  
Start Day  
Batt Test Weekday  
SUN  
MON  
TUE  
WED  
THU  
FRI  
SAT  
Auto Restart Delay  
Auto Restart Delay  
in 10-second  
increments,  
x0 sec  
Start Time  
Battery Test Time  
06:00  
User Settings: You may adjust the contrast of the  
user interface LCD or select the appropriate lan-  
guage.  
Low Battery Warning: Notifies user how much run  
time is available. Can be set from 1 to 30 minutes.  
User Settings  
Screen Contrast  
Display Language  
Low Battery Warning  
02 Minutes  
Screen Contrast  
Screen Contrast  
Press to increase  
Press to decrease  
Display Language  
Display Language  
English  
Francais  
Italiano  
Deutsch  
Espanol  
24  
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Operating Instructions  
Set Date/Time: Allows user to enable/disable DST  
(Daylight Saving Time), change the Day, Date and  
Time setting on Nfinity. When enabled, the time will  
automatically adjust to Daylight Saving Time.  
Service Contact: Set a contact for the user to reach  
if problems occur.  
Service Contact  
>Company Name  
Company Phone  
Set Time/Date  
DST Mode  
Set Time/Date  
Company Name  
Company/Name  
DST Mode  
LIEBERT CORP.  
DST Mode  
Enabled  
* Disabled  
Phone Number  
Phone Number  
Set Date/Time  
Date/Time  
WWW.LIEBERT.COM  
MM/DD/YYYY HH:MM:SS  
Remote Shutdown: Enables / Disables the Remote  
Communications Shutdown.  
Max Load Alarm Set: Allows an alarm to set when  
Nfinity’s load reaches a specific level.  
If you are using MultiLink™ software, this parameter  
should be enabled in order for the UPS output to be  
turned off once the operating system has been shut-  
down.  
Max Load Alarm Set  
Mode  
Threshold  
Remote Shutdn  
* Enable  
Disable  
Alarm Mode  
Max Load Alarm Mode  
* Enable  
External Battery: Sets total amp-hour for external  
batteries to provide a more accurate runtime remain-  
ing value on the LCD display and through communi-  
cations.  
Disable  
Threshold  
Max Load Alarm Set  
Threshold kVA = xx.x  
External Battery  
Amp-hour  
> Charge Current  
UPS Shutdown Delay: Delays UPS shutdown for  
specified amount of time after receiving shutdown  
command via relay contacts only.  
External Batt Config  
Enter total amp-hour  
0000  
UPS Shutdown Delay  
xxx seconds  
External Batt Config  
Enter charge current  
00.0  
Redundant Alarm Set: Sets Alarm to notify user  
when redundancy is no longer available.  
Redundant PWR Alarm Set  
Enable  
* Disable  
When using the Non-Modular External Battery  
Cabinets with Chargers (P/N: PB10SLF105WC120),  
enter the following:  
# Cabinets  
AH Value  
0091  
Charge Current  
1
2
3
4
5
6
07.0  
14.0  
21.0  
28.0  
35.0  
42.0  
0182  
0273  
0364  
0455  
0546  
25  
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Operating Instructions  
Bypass Alarm Mode: Allows the user to enable/dis- Guarantee Shutdown: Allows the user to guarantee  
able alarm, indicating that the bypass is not quali-  
fied.  
a shutdown after a low battery warning is announced,  
even if the utility becomes qualified.  
Bypass Alarm Mode  
> Enable  
Guarantee Shutdown  
Enable  
* Disable  
Disable  
Line Compensation: Allows the user to control the  
amount of line drop compensation to be applied to the  
nominal output voltage. Line drop compensation is  
intended to compensate for any IR drop that may  
occur when the UPS is a significant distance from the  
protected load.  
Intelli-Battery Ca.: Allows the user to enter the  
quantity of intelligent battery cabinets installed.  
Enter Intelli-  
Battery cabinet  
count  
x
Output Volt: x  
Increase Decrease  
ESC to cancel  
Air Filter Reminder: Allows the user to set a warn-  
ing reminder to check the air filters.  
to Accept & Exit  
Air Filter Reminder  
2 weeks  
4 weeks  
Factory Defaults: Allows the user to reset all set-  
tings to the values in effect when the UPS was  
shipped from the factory.  
10 weeks  
26 weeks  
52 weeks  
* Disable  
Load Factory Default  
Are you sure?  
Press for yes  
Press ESC for no  
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Operating Instructions  
UPS Configuration Screen - Service Mode Menu  
Service Mode contains site identification information about the UPS system. The data is entered by  
Liebert Global Services (LGS). To view the data, go to the Main Menu, select UPS Configuration and  
press  
. Next, select Service Mode and press  
.
Set Site ID: Press  
menu. Scroll to Set Site ID and press  
the screen shown below.  
to return to the Service Mode  
ESC  
Main Menu  
to display  
UPS Status  
> UPS Configuration  
Display Date/Time  
Event Log  
Service Mode  
Service Mode  
> Set Site ID  
Set Tag Number  
Set UPS ID  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
Set Site ID  
-
UPS Configuration  
UPS Configuration  
Review Settings  
Change Settings  
> Service Mode  
Set Tag Number: Press  
Mode menu. Scroll to Set Tag Number and press  
to display the screen shown below.  
to return to the Service  
ESC  
Service Mode  
Service Mode  
Service Mode  
> Set Site ID  
Set Tag Number  
Set UPS ID  
Service Mode  
Set Site ID  
> Set Tag Number  
Set UPS ID  
Set Tag Number  
-
Set UPS ID: Press  
menu. Scroll to Set UPS ID and press  
the screen shown below.  
to return to the Service Mode  
ESC  
to display  
Service Mode  
Service Mode  
Set Site ID  
Set Tag Number  
> Set UPS ID  
Set UPS ID  
3.5.3 Display Date/Time  
This feature shows the current date and time. At the Main Menu, select UPS Configuration and  
press  
. Next, select Display Date/Time and press  
.
Main Menu  
UPS Status  
UPS Configuration  
> Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
Display Date/Time  
Date/Time  
xx/xx/xxxx xx:xx:xx  
mm/dd/yyyy hh:mm:ss  
27  
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Operating Instructions  
3.5.4 Event Log  
3.5.5 Active Alarms  
Accessing the Event Log enables the user to  
Alarms affecting the Nfinity can be viewed at  
the Active Alarms screen. To access the  
screen, go to the Main Menu, select Active  
scroll through the Nfinity’s past 255 occur-  
rences. To open the Event Log, start at the  
Main Menu, select Event Log and press  
.
Alarms and press  
.
Main Menu  
Main Menu  
UPS Status  
UPS Status  
UPS Configuration  
Display Date/Time  
> Event Log  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
> Active Alarms  
Transfer to Bypass  
Module Replacement  
Service Tools  
Transfer to Bypass  
Module Replacement  
Service Tools  
Event Log  
Active Alarms  
Event: xxx/xxx xx  
event message  
Active Alarms Message  
event message  
DD/MMM/YYYY HH:MM:SS  
When an alarm sounds, the User Interface  
LCD will display a general explanation as to  
what the alarm is indicating. To view these  
messages in chronological order, press the  
Press the  
and  
buttons to scroll through  
the Nfinity’s Event Log in chronological order.  
The Event Log contains the following infor-  
mation.  
and  
buttons.  
• The first line of a typical Active Alarms  
screen will display the reason for the  
alarm occurrence.  
• The second line will give a more specific  
detail of the occurrence (i.e., module serial  
number).  
Reference Code  
Event Number  
Description  
Event 031/255  
NC09  
Power module warning  
S/N:0012200001002G1  
19 MAY 2000 16:54:27  
Event Detail or  
Serial Number  
Press  
to go back to the Main Menu.  
ESC  
Date of  
Event  
Time of  
Event  
3.5.6 Transfer to Bypass  
The typical event log screen will display the  
event number and reference code on the first  
line. The purpose of this code is to assist fac-  
tory trained service personnel in trouble-  
shooting. Please make a note of the code  
number when contacting technical support.  
The second line contains the event descrip-  
tion. The third line will have either more  
detail about the event, a serial number indi-  
cating as to which module the event occurred,  
or be left blank. The last line will show the  
date and time the event occurred.  
In the event of a UPS overload or failure, the  
UPS will transfer to bypass via its automatic  
bypass switch.  
Main Menu  
UPS Status  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
> Transfer to Bypass  
Module Replacement  
Service Tools  
Press  
to go back to the Main Menu.  
ESC  
When an event or alarm occurs, the User  
Interface LCD will display the last message  
regardless of the default screen. See 4.1 -  
Active Alarms for a list of events and alarms  
and possible solutions. If you are unsure of  
the corrective action to take, contact a Liebert  
representative at the number listed on the  
back of this manual.  
Transfer to Bypass  
Press for bypass  
Press ESC to cancel  
28  
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Operating Instructions  
3.5.7 Module Replacement  
The user interface also supplies instructions for removing and replacing modules. From the Main  
Menu, access the module replacement screen and select the type of module. Refer to the screens  
below:  
Main Menu  
UPS Status  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Transfer to Bypass  
> Module Replacement  
Service Tools  
Module Replacement  
Module Replacement  
> Ctrl w/ Redundant  
Ctrl w/o Redundant  
Pwr w/ Redundant  
Pwr w/o Redundant  
Battery Module  
Module Replacement menu options  
Control Module w/ Redundant  
Power Module w/ Redundant  
Battery Module  
Cntl Mod Replacement  
1. Lift off display  
panel and place  
Pwr Mod Replacement  
1. Remove all  
Battery Module  
1. Remove all  
front bezels  
front bezels  
on top of UPS  
2. Locate amber LED  
3. Open lever  
2. Locate amber LED  
3. Loosen fastener  
4. Replace module  
5. Tighten fastener  
6. Replace all bezels  
2. Locate amber LED  
3. Open lever  
4. Loosen fastener  
5. Replace module  
6. Tighten fastener  
7. Close lever  
4. Loosen fastener  
5. Replace module  
6. Tighten fastener  
7. Close lever  
8. Replace all bezels  
8. Replace display  
Control Module w/o Redundant  
Power Module w/o Redundant  
Cntl Mod Replacement  
1. Remove bottom  
bezel and place  
UPS in bypass  
2. Lift off display  
panel and place  
on top of UPS  
3. Locate amber LED  
4. Open lever  
5. Loosen fastener  
6. Replace module  
7. Tighten fastener  
8. Close lever  
9. Wait for amber LED  
to stop flashing.  
10.Replace display  
11.Switch bypass to  
return to UPS  
operation  
12.Replace bezel  
Pwr Mod Replacement  
1. Remove bottom  
bezel and place  
UPS in bypass  
2. Remove remaining  
front bezels  
3. Locate amber LED  
4. Open lever  
5. Loosen fastener  
6. Replace module  
7. Tighten fastener  
8. Close lever  
9. Wait for amber LED  
to stop flashing.  
10.Switch bypass to  
return to UPS  
operation  
11.Replace all bezels  
For more details on module replacement, consult 4.0 - Troubleshooting.  
29  
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Operating Instructions  
3.5.8 Service Tools for Liebert Global Services Engineers  
The Service Tools option is intended for use by Liebert Global Services engineers or Liebert-trained  
engineers to carry out certain tests and clear failures. These are advanced menus, entering changes  
may adversely affect UPS operation. From the Main Menu, shown below left, select Service Tools and  
press  
.
BM Cell Replacement: Allows a Liebert-trained  
engineer to reset the battery module (BM) energy val-  
ues to defaults after replacing battery cells within the  
module.  
Main Menu  
UPS Status  
UPS Configuration  
Display Date/Time  
Event Log  
Active Alarms  
Service Tools  
Transfer to Bypass  
Module Replacement  
> Service Tools  
Service Tools  
UPS Test  
Clear Failures  
> BM Cell Replacement  
Reset Battery Stats  
Reset Bypass Stats  
Service Tools  
Service Tools  
> UPS Test  
Clear Failures  
Reset All BM Energy  
Settings to Default  
Press for Yes  
BM Cell Replacement  
Reset Battery Stats  
Reset Bypass Stats  
Press ESC for No  
UPS Test: Allows a Liebert-trained engineer to test  
the Batteries, LEDs or LCD.  
Reset Battery Stats: Allows a Liebert-trained engi-  
neer to reset all battery statistics. These statistics  
include battery usage and discharge count.  
Service Tools  
Service Tools  
Service Tools  
> UPS Test  
Service Tools  
Clear Failures  
UPS Test  
BM Cell Replacement  
Reset Battery Stats  
Reset Bypass Stats  
Clear Failures  
BM Cell Replacement  
> Reset Battery Stats  
Reset Bypass Stats  
UPS Test  
LED  
Reset Battery Stats  
Are you sure?  
LCD  
Battery  
Press for Yes  
Press ESC for No  
Clear Failures: Allows a Liebert-trained engineer to  
reset the UPS after a Battery Module failure alarm.  
Reset Bypass Stats: Allows a Liebert-trained engi-  
neer to reset all bypass statistics. These statistics  
include manual bypass count, bypass overload count  
and other bypass count.  
Service Tools  
Service Tools  
UPS Test  
> Clear Failures  
BM Cell Replacement  
Reset Battery Stats  
Reset Bypass Stats  
Service Tools  
Service Tools  
UPS Test  
Clear Failures  
BM Cell Replacement  
Reset Battery Stats  
> Reset Bypass Stats  
Clear Failures  
Clear batt failures  
Reset Bypass Stats  
Are you sure?  
Clear batt failures  
Press for Yes  
Press for Yes  
Press ESC for No  
Press ESC for No  
30  
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Troubleshooting  
4.0 TROUBLESHOOTING  
4.1 Active Alarms  
In the event of an alarm, the User Interface LCD will display the last message regardless of the  
default screen. A list of possible alarm messages is displayed below. If you encounter one of these or  
other alarm messages and are unsure of the corrective action to take, please contact a qualified Lie-  
bert representative at the number listed on the back of this manual.  
User Interface Text  
Cause  
Action  
Main Control Failure The Nfinity system has detected a  
System Control Module failure.  
Identify and replace the failed System Control Module or  
contact Liebert Global Services for support.  
Power Module Fail The Nfinity system has detected a Power Identify and replace the failed Power Module or contact  
Module failure. Liebert Global Services for support.  
Battery Module Fail The Nfinity system has detected a Battery Identify and replace the failed Battery Module or contact  
Module failure.  
Liebert Global Services for support.  
Redun. Control Fail The Nfinity system has detected a  
System Control Module failure.  
Identify and replace the failed System Control Module or  
contact Liebert Global Services for support.  
Battery Card Failure The Nfinity system has detected an  
Intellislot Battery Card failure.  
Identify and replace the failed Intellislot Battery Card or  
contact Liebert Global Services for support.  
UPS On Battery  
The Nfinity is drawing power from the  
batteries, not from utility.  
Verify input breaker is closed. Verify input voltage is  
present and correct voltage. Verify input frequency is  
correct.  
Reminder alarm -  
Check air filter  
The fan filter reminder time has elapsed. Check and clean the fan filter and acknowledge the alarm.  
This alarm may be disabled or the interval between these  
alarms can be configured via the User Interface.  
Short Circuit  
User tried to turn the output on following a Wait for at least 30 seconds and then turn the output on.  
Recovery - Please short circuit on the output without waiting  
Wait for the required 30 seconds to expire.  
Power Module N+1 Number of power modules is not  
Redundancy Alarm adequate to provide power redundancy.  
Reduce the UPS’s load, add power modules to the frame  
or disable the alarm feature via the User Interface.  
Output Off - Output A short circuit was detected on the output. Correct short (or extreme overload condition) and turn on  
Short Circuit  
the UPS’s output.  
UPS Output  
Overload  
The load on the Nfinity exceeded the  
capacity of the active power modules.  
Reduce the UPS’s load or add power modules.  
Output exceeds  
max load setting  
This will occur if the max load alarm is  
enabled, and the measured load at the  
UPS’s output is greater than the value  
set.  
Reduce the UPS’s load, increase the Maximum Load  
Alarm limit via configuration or disable the Maximum Load  
Alarm limit via configuration.  
Output Off-  
Overload, bypass  
unavailable  
Normally a severe overload will cause the Reduce the UPS’s output load and verify that the UPS’s  
unit to go to automatic bypass. This event bypass source is qualified (amplitude and frequency).  
informs the user that bypass was not  
qualified so the unit dropped the load to  
protect itself.  
Verify that the configuration voltage and frequency  
settings are properly selected.  
Switch To  
Manual Bypass  
The Nfinity is on automatic bypass.  
Manual bypass switch should be  
activated before servicing.  
Transfer Nfinity to manual bypass and call Liebert service  
for assistance.  
Load Exceeds  
Battery Module  
Capacity  
The measured load on the output will  
cause the battery modules to exceed their non-modular battery cabinet(s) are added, verify that the  
limits if the UPS transfers to battery  
mode.  
Reduce the UPS’s load or add battery capacity. If external  
UPS’s configuration is set to match the external battery  
amp-hour rating and charger rating.  
Bypass source  
not qualified  
The input voltage is not within the  
specified voltage or frequency range so  
the UPS will not allow an automatic or  
manual transfer to bypass.  
Verify UPS’s configuration for voltage and frequency.  
Check UPS’s input breaker; disable this alarm if desired  
via configuration.  
Load exceeds  
frame limit  
Load is greater then the rated frame limit. Reduce the UPS’s load.  
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Troubleshooting  
User Interface Text  
Cause  
Action  
Assert manual  
bypass  
A user-initiated transfer to bypass will  
assert this alarm, instructing the user to  
enable the manual bypass switch. Once  
Engage the manual bypass switch (located at the bottom  
front on the left hand corner of the unit). Once engaged,  
the switch may be de-asserted to return to normal  
the manual bypass is asserted, the alarm operation.  
will clear. This is a non-mutable alarm.  
Remote shutdown The most likely cause is that the incorrect Check for a wiring problem to the Shutdown On Battery at  
on COM port 1  
active  
cable has been connected to the COM  
port between the UPS and the host.  
the COM1 connector. If this problem is not addressed, the  
unit will shut down shortly after switching to battery  
operation.  
Battery Test  
Weak Battery  
The battery was determined to be weak  
as a result of the battery test.  
Depending on the age of the batteries, it may be  
appropriate to replace all batteries in the system.  
Schedule a battery test so that the system operation is  
double-checked once the batteries become fully charged.  
Battery Test  
Failure  
One or more of the following was  
detected during a battery test:  
• UPS output regulation failure was  
detected.  
Replace the battery modules that have active failures/  
warnings. Depending on the age of the batteries, it may be  
appropriate to replace all batteries in the system.  
Schedule a battery test so that the system operation is  
double-checked once the batteries become fully charged.  
• A battery module warning or failure  
occurred.  
• A system control failure occurred.  
Battery Cabinet  
Not Connected  
This is intended to detect a situation  
where a Modular battery cabinet has  
been connected for communication, but  
the power busses are not connected.  
Check that the Modular Battery breaker is closed. Verify  
proper connections between UPS and Modular Battery  
Cabinet.  
Don’t Remove SC  
The only good System Control Module  
lock lever was raised with the output on  
and the unit is not on bypass.  
• Lower the lock lever on the System Control Module.  
• Provide qualified bypass power so that transfer to  
bypass is possible.  
• Add a redundant System Control Module so that the load  
is not dropped.  
Failure: Select  
Manual Bypass  
The System Controller detected a failure. Transfer UPS to manual bypass and contact Liebert  
Select manual bypass so that the unit can Global Services.  
be serviced.  
Output Off -  
This event informs the user that bypass  
Verify that the UPS’s bypass source is qualified (amplitude  
bypass unavailable was not qualified so the unit dropped the and frequency). Verify that the configuration voltage and  
load to protect itself.  
frequency settings are properly selected.  
Last UPS Shutdown REPO switch was pressed.  
If REPO wasn’t pressed, check for REPO wiring problems.  
By Emergency  
Power Off  
External Battery  
Module Warning  
The energy delivered from the Non-  
Modular battery did not meet  
programmed battery capacity.  
Verify proper connections between UPS and Non-Modular  
Battery Cabinet. Reenter the amp-hour rating for the  
external battery (set the amp-hour entry to zero and press  
the return key, then reset it to the appropriate value for the  
external battery). If the problem persists, the external  
battery should be replaced.  
Battery Module  
Not Ready  
A battery module is not ready. In most  
cases, one or more battery modules  
should indicate a warning/failure  
condition.  
Ensure that the battery module is fully seated and the 1/4  
turn fastener is engaged. If the problem persists, replace  
the battery module with warning/failure condition indicated  
at the User Interface. If no User Interface warning/failure  
of battery module, look for the battery module with LEDs  
indicating a problem and replace that unit.  
Power Module  
Not Ready  
A power module is not ready. In most  
cases, one or more power modules  
should indicate a warning or failure  
condition.  
Ensure that the power module is fully seated and the 1/4  
turn fastener is engaged. If the problem persists, replace  
the power module with warning/failure condition indicated  
at the User Interface. If no User Interface warning/failure  
of power module, look for the power module with LEDs  
indicating a problem and replace that unit.  
32  
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Troubleshooting  
4.2  
Module LED Indication  
Every Battery, Power and Control Module features two LEDs to help inform the user of the module  
status, as shown below left. Refer to Table 2 for details.  
Table 2  
Guide to LEDs  
Green Status LED  
Yellow Fault LED  
Status  
LED  
Fault  
LED  
Control Module  
(Green)  
(Yellow)  
Module Status  
Module not inserted into  
frame. System is OFF.  
OFF  
OFF  
Module is initializing  
(max 30 seconds*).  
OFF  
ON  
Green Status LED  
Yellow Fault LED  
FLASHING  
OFF  
Normal Operation  
Module is in start-up  
qualification mode or module  
warning. **  
FLASHING FLASHING  
FLASHING  
OFF  
ON  
FLASHING  
OFF  
Module failed and is off-line.  
Power Module  
Abnormal operation,  
re-insert module.  
ON  
If this persists, contact  
Liebert Global Services at  
1-800-543-2378.  
ON  
ON  
Green Status LED  
Yellow Fault LED  
ON  
FLASHING  
*
If this persists for more than 30 seconds, check to verify the  
lever is in the down position, otherwise the module is faulty.  
** If both green and yellow LEDs are flashing for more than 30  
seconds, then reinsert module.  
Battery Module  
33  
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Troubleshooting  
4.3  
Module Replacement  
MODULE REMOVAL  
(Steps 4a-c)  
Follow the instructions below when replacing or  
adding a Control, Battery or Power Module to the  
system.  
Step 4a  
To order additional modules, contact your Liebert  
representative or call 1-800-LIEBERT.  
4.3.1 Removing Modules  
1. Remove bezel cover of appropriate module.  
When replacing a Power or Battery Module,  
verify the faulty module by confirming the  
yellow LED is lit.  
2. If removing a Control or Power Module with  
no redundant modules, switch UPS to  
manual bypass.  
3. Pull out and lift the lever if replacing a  
Control or Power Module, then turn fastener  
counterclockwise until it is loosened.  
Step 4b  
Turn fastener  
counterclockwise  
Step 4c  
Lift lever up (for  
Control and Power Modules)  
4. To remove the module:  
a. Start to pull out module (shown above  
right, top). About 2/3 out it will stop.  
CAUTION  
!
Battery Modules are heavy—66 lb (30 kg).  
b. Slide module away from the center of the  
UPS (shown above right, center).  
c. Continue to pull until module is removed  
(shown above right, bottom).  
WARNING  
POTENTIAL TIP HAZARD  
Install all battery modules starting from  
the bottom. For module removal, start  
from the top. Do not remove more than  
one module at a time. Failure to do so  
may cause unit to tip over and cause  
serious injury.  
5. Dispose of module in an environmentally  
responsible way that complies with local  
codes/regulations or return to Liebert for  
proper disposal.  
NOTE  
Battery Modules may contain shipping  
screws. These screws may be removed and  
discarded.  
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Troubleshooting  
4.3.2 Adding or Replacing Modules  
NOTE  
Power Modules must be installed in the top half of the Nfinity frame. Battery Modules can be  
installed in any bay of the UPS frame.  
1. Lift module to appropriate bay, resting end of module on bay  
shelf. Use caution not to rest the module on the lower bezel  
cover.  
Turn fastener  
clockwise  
2. Push module into bay. Once halfway in, slide module sideways  
toward the center of the UPS. Continue pushing module until  
fully inserted.  
3. Press and turn fastener clockwise until locked. If replacing a  
Control or Power Module, press lever down.  
4. Wait about 15 seconds as the module performs a start-up test  
and synchronizes with the other modules. Both the yellow and  
green LEDs should be flashing. A green flashing LED will  
then confirm the module is properly installed.  
5. If UPS was placed in bypass manually, transfer back to UPS  
operation.  
6. Replace bezels.  
Press lever down (for  
Control and Power Modules)  
NOTE  
When replacing the Control Module, record user configuration data before removing. Re-verify  
the configuration settings after the new Control Module is installed.  
4.3.3 Replacing the User Interface  
1. Lift off user interface and set it on top  
of the UPS frame.  
2. The attached cable will be connected to  
an Intellislot card, found in a port  
between the control modules.  
3. Remove the cable and the attached  
Intellislot card from the UPS.  
4. Plug the new Intellislot card into the  
UPS.  
5. Plug the new user interface cable into  
the Intellislot card.  
6. Set replacement User Interface into  
proper position.  
35  
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Maintenance  
5.0 MAINTENANCE  
5.1 Maintenance  
5.1.1 Proper Care  
Keeping your Liebert Nfinity UPS operating properly is imperative to optimal performance and life of  
the unit. It is recommended that a certified technician perform preventive and corrective mainte-  
nance. Liebert Global Services (LGS) is dedicated to ensuring the highest level of performance and  
unmatched support for your Nfinity UPS. Contact an LGS representative for service to guarantee  
maximum reliability and system availability.  
5.1.2 Scheduled Maintenance  
It is recommended the following maintenance is performed at least monthly:  
• Clean unit  
• Clean / replace filters  
• Verify proper airflow  
It is recommended the following maintenance is performed annually:  
• Verify all Power Modules are operating properly.  
• Verify all Battery Modules are operating properly.  
• Verify redundancy (if applicable).  
5.1.3 Replacing Fan Filters  
Nfinity’s intake fans contain filters that will need to  
be replaced or cleaned periodically, depending on  
the surrounding environment. Check by removing  
the bottom bezel and noting the condition of the two  
filters. If filters are dirty, replace them by removing  
the plastic cover over the filter frame and inserting  
a new filter in its place. Use caution when replacing  
filters when fans are running.  
The fan filters are washable and can be reused. To  
wash filters, place them under running water (with  
the dirt side down) to remove dirt and dust. Blot dry  
with a towel and allow air-drying before reusing.  
Fan Filters  
36  
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Specifications  
6.0 SPECIFICATIONS  
General & Environmental  
Units  
kVA  
kW  
Configuration  
4
8
12  
16  
Unit Rating  
2.8  
5.6  
8.4  
11.2  
Compliant Safety Standards  
Conducted and Radiated EMC Levels  
Compliant Immunity Standards  
Mechanical  
UL 1778; c-UL  
FCC Part 15, Class A  
IEEE C62.41, Category B  
Units  
8 Bay  
12 Bay  
20 (508)  
28 (711)  
Width  
20 (508)  
28 (711)  
40 (1016)  
Dimensions  
Depth  
Height  
in (mm)  
54 (1372)  
Environmental  
Units  
F (C)  
%
Operating Temperature (max)  
Relative Humidity  
32° - 104° (0° - 40°)  
0-95% non-condensing  
10,000 (3,000)  
Maximum operating altitude  
Nominal heat dissipation  
Acoustic noise level  
Input Data  
ft. (m)  
BTU/Hr  
dBA  
1,062  
2,124  
3,186  
<62 @ 1 meter  
4,248  
Units  
VAC  
Nominal input voltage  
208 or 240  
Operating voltage range is variable based on output loading percentages  
% UPS Load  
80 – 100%  
60 – 80%  
30 – 60%  
0 – 30%  
Input Voltage  
170 VAC  
144 VAC  
127 VAC  
110 VAC  
Minimum Voltage  
Range (Typical)  
Power factor  
Cos Ø  
Hz  
>.98  
60  
Input frequency (nominal)  
Input frequency range  
Battery Module  
Hz  
40-70  
Units  
Number of lead acid batteries  
Number of battery cells  
Maximum charge current (full load)  
Nominal Voltage  
10  
60  
A
VDC  
Hrs  
3
120  
Recharge Time  
Typically 6 (to 90% capacity)  
Output Data  
Units  
VAC  
%
Output voltage  
208/120 or 240/120  
Voltage regulation  
±3  
Voltage stability (100% step load)  
Recovery time  
%
±7  
96  
msec  
<3 THD, linear load  
<7 THD, non-linear load  
60  
Voltage distortion  
%
Output frequency  
Hz  
%
Efficiency at 100% load  
89  
110 - 125% for 10 min  
126-150% for 10 sec  
151 - 200% for 2 cycles  
Output overload capability  
%
6.1  
Product Warranty Registration  
To register for warranty protection:  
• Visit the Quick Links section of our Web site at:  
http://www.liebert.com  
• Click on Product Warranty Registration and fill in the form.  
If you have any questions, please contact us at:  
US: 800-222-5877  
Outside the US: 614-841-6755  
[email protected]  
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Specifications  
38  
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POWER AVAILABILITY  
Nfinity™ Power System  
USER MANUAL  
The Company Behind the Products  
Technical Support/Service  
Web Site  
With over a million installations around the globe,  
Liebert is the world leader in computer protection  
systems. Since its founding in 1965, Liebert has  
developed a complete range of support and  
protection systems for sensitive electronics:  
www.liebert.com  
Monitoring  
800-222-5877  
[email protected]  
Outside the US: 614-841-6755  
•
•
•
Environmental systems—close-control air  
conditioning from 1 to 60 tons  
Single-Phase UPS  
800-222-5877  
[email protected]  
Power conditioning and UPS with power  
ranges from 300 VA to more than 1000 kVA  
Integrated systems that provide both  
environmental and power protection in a  
single, flexible package  
Monitoring and control—from systems of any  
size or location, on-site or remote  
Service and support through more than 100  
service centers around the world and a 24/7  
Customer Response Center  
Outside the US: 614-841-6755  
Three-Phase UPS  
800-543-2378  
[email protected]  
•
•
Environmental Systems  
800-543-2778  
Outside the United States  
614-888-0246  
While every precaution has been taken to ensure  
the accuracy and completeness of this literature,  
Liebert Corporation assumes no responsibility and  
disclaims all liability for damages resulting from  
use of this information or for any errors or  
omissions.  
Locations  
United States  
1050 Dearborn Drive  
P.O. Box 29186  
Columbus, OH 43229  
Italy  
Via Leonardo Da Vinci 8  
Zona Industriale Tognana  
35028 Piove Di Sacco (PD)  
+39 049 9719 111  
© 2003 Liebert Corporation  
All rights reserved throughout the world.  
Specifications subject to change without notice.  
® Liebert and the Liebert logo are registered  
trademarks of Liebert Corporation. All names  
referred to are trademarks or registered  
trademarks of their respective owners.  
Fax: +39 049 5841 257  
Asia  
23F, Allied Kajima Bldg.  
138 Gloucester Road  
Wanchai  
Hong Kong  
+852 2 572 2201  
Fax: +852 2 831 0114  
SL-23950 (6/03) Rev. 4  
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